First off, I love Rustic and all of Hanse's work I've had the privilege of playing.
I've played Rustic many, many times in all kinds of conditions and all kinds of round types (competitive, practice rounds, "fun" rounds, etc.) The one hole on the property that seems to need a bit of a "tweak" is 15. I love the hole, but believe it would benefit from a tiny bit more "space" in the back tier to make the back pin position more viable in a tournament. As it is, I don't think I've ever seen it there in a qualifier or championship -- certainly not when the wind is up and the greens are firm and running ~12.
Even the middle tier could use a bit more room when the wind is up and the greens fast. Any miss long or right can cause even a moderately difficult recovery shot to roll all the way off the front and far down the hill that fronts the green -- not that there's anything "wrong" with that, necessarily(?)...
I'm really not sure how I feel about the hole. Personally, I have always scored well there, but it seems like it needs a tiny bit more green space to support the severe contours. Thoughts from those who have played it? Am I crazy? Is there room for disagreement there? Or am I just flat-out wrong (I could take that)?